THE RELATIONSHIP OF MOVEMENT RESPONSES TO LEARNING ACHIEVEMENT WERE INVESTIGATED (1) TO IDENTIFY FACTORS CLAIMED TO MEASURE MOTOR APTITUDE AND INTELLECTUAL ACHIEVEMENT IN PRE-ADOLESCENTS, (2) TO DEVELOP MOTOR APTITUDE TEST BATTERIES FOR PREDICTING INTELLECTUAL ACHIEVEMENT, (3) TO STUDY RELATIONSHIPS OF COORDINATION AND BALANCE TEST ITEMS IN PREDICTING INTELLECTUAL ACHIEVEMENT, (4) TO STUDY SEX DIFFERENCES IN MOTOR APTITUDE TEST ITEMS, AND (5) TO VALIDATE THESE FINDINGS THROUGH STUDYING EFFECTS OF AN ORGANIZED PHYSICAL EDUCATION PROGRAM ON INTELLECTUAL PERFORMANCE. A BATTERY OF MOTOR APTITUDE TEST ITEMS USEFUL IN PREDICTING ACADEMIC SUCCESS WAS SELECTED BY FACTOR ANALYSES. OTHER TESTS USED INCLUDED THE OTIS SHORT FORM TEST OF MENTAL ABILITY AND THE STANFORD STANDARD ACHIEVEMENT TESTS. BOYS (122) AND GIRLS (89) WERE USED AS SUBJECTS. THREE SUBGROUPS WERE ESTABLISHED FOR EACH SEX--(1) HIGH ACHIEVERS (IQ SCORES 125 AND ABOVE), (2) MEDIUM ACHIEVERS (IQ SCORES 95-100), AND (3) LOW ACHIEVERS (IQ SCORES 85 AND BELOW). RESULTS INDICATE THAT COORDINATION AND BALANCE ITEMS TESTED HAVE A HIGH DEGREE OF DISCRIMINATION POWER AMONG MEDIUM ACHIEVERS. INTERCORRELATIONS PERTAINING TO LEVELS OF INTELLECTUAL PERFORANCE INDICATE COORDINATION AND GROWTH ITEMS ARE RELATED TO ACADEMIC ACHIEVEMENT. FACTOR ANALYSIS OF THE 42 ITEMS REVEALED A UNIFORMITY OF FACTOR STRUCTURE PERTAINING TO SEX, BUT THAT THESE STRUCTURES LOSE THEIR UNIFORMITY IN THE THREE ACHIEVEMENT GROUPS. IT WAS CONCLUDED THAT THERE WAS A DEMONSTRATED RELATIONSHIP BETWEEN INTELLECTUAL ACHIEVEMENT AND CERTAIN PHYSICAL PERFORMANCE ITEMS. THE RELATIONSHIP WAS GREAT ENOUGH TO PERMIT PREDICTION. THUS AN ORGANIZED PHYSICAL EDUCATION PROGRAM DEVELOPED TO STUDY FURTHER ITS RELATIVE EFFECTIVENESS ON IQ AND ACADEMIC ACHIEVEMENT SCORES. THE ACTIVITIES INCLUDED CALISTHENICS, GYMNASTICS, TRACK AND FIELD EVENTS, GAMES, AND RHYTHMICS. THE ORGANIZED PROGRAM WAS FOUND TO HAVE NO EFFECT ON IQ SCORES BUT DID HAVE A FAVORABLE EFFECT ON ACADEMIC ACHIEVEMENT SCORES. A 67-ITEM BIBLIOGRAPHY IS INCLUDED. THIS DOCUMENT IS AVAILABLE FROM CHARLES E. MERRILL BOOKS, INC., COLUMBUS, OHIO 42216, FOR $4.95. (DF)